Air-brake mechanism for logging-trains.



G. H. LIBBY & H. L. TURNEY.

AIR BRAKE MECHANISM FOR LOGGING TRAINS.

APPLICATION FILED DEO.29,1911.

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BY y whmzzh mom/5y Patented Oct. 1, 1912.

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WITNESSES:

G. H. LIBBY & H. L. TURNEY. AIR BRAKE MECHANISM FOR LOGGING TRAINS.

APPLICATION FILED DEO.29, 1911.

ATTORNEY provements in a logging, train is to couple wheel-trucks. in pairs, one pair to each load been unloaded, thetrucks' are all coupled up 1 together, each the length of 7 As however no practical way brakes. simultaneously in case of p emergency.

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Specification of Letters Patent.

Application filed December 29, 1911. Serial 1J0. $68,538

and HARRY L. TURNEY, citizens of the United States, residing at Portland, in the county of Multnomah and State of Ore on,

have invented certain new and useful m- Air-Brake Mechanism for Logging-Trains, of which the following is a specification.

a Our invention relates to a logging train,

and more particularly to the brake mechanism of such a train.

Logging trains are usually composed of flat cars comprising a car-bod supported on a couple of pivoted whee -trucks and equip ed with air-brakes. The objection to this train system is, that the length of a fiat car is fixed, while logs vary materially in length, wherefore the logs which are sufiiciently uniform in len .h to be carried economically on a fiat car, onlycomprise a small percentage.

A more convenient manner of arranging up a series of of logs, as in this fashion t two trucks of each load can be spaced to accommodate the logs, they are to carry. has heretofore been known of adjustably inter-connecting the air-brakes of each pair of wheel-trucks, hand-brakes have been handebrakes necessitate the employment of a resorted to. But

brakeman oneach truck, and whatis more serious, hand-brakes are the direct cause of most accidents and wrecks, for the reason that they do not act-fast enou instantlylcheckthe motion of the tram, in

case the latter gets beyond control, and because the brakemen cannot apply all of the such an The brakemen are. also 'sta'' tioned in a very dangerous place, and have absolutely no chance of escape when the 45 train runs away. 4

On alllogging roads. the grade constantly changes, making it necessary to set and re lease thebrakes a the' haul, and also or this reason the hen eat many times durin brakes are objectionable on account of their slowness of OPBIfltlOIL.

' In order to overcome theeedifliculties our train of the pair, and on the reel we pl hose, the inner end of whi h extends to the 1 side the casing;

'- spring mechanism adapte tain the coil within the casing, and to per- Imit it to adjust itself 1 distance betweenthe trucks when the train travels around. curves. mounted also automatically adjusts itself to 1 any distance the trucks may be spaced to accommodate the len to be loaded, and

pressure at all times.

h to cars offs, log j g train which our invention is embodidii Fig. 2 1s a side elevation'of a truck, shown partly 1n sectlomgand with parts removed truck; it comprises a circ as cover 4 a base 5, and as the top surface. of the beam 7 setsconsiderably higher that the top of the object is to provide *each truck of an entire last named an airbrake, and with means forinter-connecting said air-brakes, and with tliisobject in view our invention consists in placing afiexible, spring-held air-hose mechanism between each air of trucks. To this end we mount a ree in-a casing on one o the trucks of a ace a" coil of airbrake mechanismof the" said truck, while the outer free end of the hose projects out- A further o ject to provide a suitable to yieldingly reto variations in the th of the logs, that are it maintains full air- On, thereturn trip, after-the logs have onthe reel, whereby rakes can be operated as on an ordinary 1 train of flat cars. a

1 The objects and features of our invention are clearly set .forth in the following description and i drawings inwhich:

illustrated in theappended Figure 1 shows two in order to illustrate-the magazine and hose connections,Fig. 3; isa cross sectional view 5 I of the hose magazine, and Fig. 4 .is a plan- 95 view ofi the hose magazine with portions 1 of the to -plate removed; v

Truckody l is mounted on wheels 2, and is rovided with a pivoted 3, onw ich the logs rest, is rigidly secured to the 'latform of the and #Paa a Oct .11, 1912. 4

The hose thus hose magazine. taking care 1 of its extra length; of hose by automat' ll winding it u pressure of 8z11Z-lS maintained, so that the cross-beam The hose casing casing, there is no danger of the logs colliding and possibly crushing the casing. Base 5 is made with a central perforated hub 6, which serves as a bearing for the hub-portion of a disk 7, and this disk, together with its fixed flanges 8, 9, forms the reel on which hose 10 is wound. The inner end of said hose terminates in. a pipe 11, which extends to the center of the reel, and at the center said pipe communicates with an air passage 12. Between the reel and base 5 is placed a heavy band spring 13, the outer end of which is secured to stud 14 of the reel, while its inner end is fixed on stud 15 of the base. The action of said spring is to wind the hose on to the reel, and, when the hose is uncoupled, its free end is held from being accidentally drawn into the casing by coupling16, which is larger than width of casing-aperture 17.

In order to control the action of the reel, in case at any time it becomes necessary to uncouple a hose, we provide means for looking said reel against rotation, as best shown in Figs. 3 and 4:. A plurality of radially disposed notches 23 are cut in the reel for registration with a cam 24, to which is rigidly aflixed a rod 26, and the latter journals-in a casing 25, secured to the top of cover 4. Rod 26 extends across the cover,

and is at its outer end provided with a handle 27, by means of which said rod is rotated to cause said cam to engage the notches of the reel, and to disengage the cam from said notches.

Rigidly secured to the truck-body is a pipe 18, which operatively connects central passage 12 with air-cylinder 19 of the brakemechanism. As said pipe is stationary, and the reel is free to rotate, it is necessary to provide an air-tight joint between the pipe and the reel, and this weaccomplish by the introduction of a suitable stuffing-box 20.

The operation of our device is readily understood from the foregoing description. In Fig. l we show the trucks of each load spaced to accommodate long and short logs. It is noticed that only one truck of each pair carries a magazine, and that the hose from said magazine extends to the other truck of the pair. The hose connection between each section or car is of any well known type, and is indicated by reference number 21.

In conclusion we wish to state, that we may suspend supporting hooks from the load, such as hooks 22 in Fig. 1, and by resting the hose on these hooks, the strain on the hose and the coil spring in the magazine is greatly relieved.

Having thus described our invention, we claim:

1. In a logging train, the combination with a pair of wheel-trucks, each truck provided with an air-brake, and with means for carrying a load of logs; of means for adjustably inter-connecting the air-brakes of the two trucks, in order that said trucks may be spaced to accommodate the length of the logs they are to carry, said means including a hose magazine horizontally placed on the platform of one of said trucks so as to clear the superimposed load.

2. In a logging train, the combination with a pair of wheel-trucks, each truck provided with an air-brake, and with means for carrying a load oflogs; of means for adjustably inter-connecting theair-brakes of the two trucks, said means comprising, a casing rigid on one truck, a reel rotatably hun in said casing, an air-hose mounted on sai reel, a coil spring operatively connected with said reel and adapted to wind said hose on to the reel; and means for connecting said air hose with the brake mechanism of the second truck.

3. In a logging train, the combination with a pair of wheel-trucks, each truck provided with an air-brake, and with means for carrying a load of logs; of a hose-magazine horizontally placed on the platform of one truck so as to clear the superimposed load and communicating with the air-brake of the said truck, a connecting hose yieldingly suspended in said magazine; means for connectingsaid air-hose with the brake mechanism of the second truck; and means for locking said hose magazine against rotation. 4. In a logging train, the combination with a pair of wheel-trucks, each truck provided with an air-brake, and with means for carrying a load of logs; of a hose-magazine horizontally placed on the platform of one truck so as to clear the superimposed load and communicating with the air-brake of the said truck, a connecting hose yieldingly suspended in said magazine; means for connecting said air-hose with the brake mechanism of the second truck; and means for locking said hose magazine against rotation. 5. In a logging train, the combination with a pair of wheeltrucks, each truck provided with an air-brake, and with means for carryinga load of logs; of a casing secured to the platform ofone of the trucks, a reel rotatably hung in said casing, an air-hose mounted on said reel, a coil-spring o eratively connected with said reel and a apted to wind said air-hose on to the reel, and means for connecting said air-hose with the brake mechanism of the second truck.

6. In a logging train, the combination with a pair of wheel-trucks, each truck provided with an air-brake, and with means for carrying a load of logs; of means for adj ustably inter-connecting the air-brakes of the two trucks, said means comprising, a casing secured to the platform of one of the trucks, a reel rotatably hung in said casing, an air-hose mounted on said reel, a coilspring operatlvely connected with said reel and adapted to wind said hose on to the reel, means for connecting said air-hose with the brake mechanism 01: the second truck, and means for locking said reel against rotation.

7. In a logging train, the combination with a pair of wheel-trucks, each truck provided with an air-brake, and with means for carrying a load of logs; a casin secured to the platform of one of the true s, a reel rotatably hung in said casing, a coil-spring operatively connected with said, reel and adapted to wind said air-hose on to the reel, and means for connecting said air-hose with GEORGE H. LIBBY. HARRY L. TURNEY.

Witnesses:

IRENE Moon, 0. W. Hm. 

